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Engineering optimization of decompressive craniectomy based on finite element simulations.

Máté Hazay1, Emese Nagy1, Péter Tóth2

  • 1Department of Structural Mechanics, Budapest University of Technology and Economics, Budapest, Hungary.

Acta of Bioengineering and Biomechanics
|November 30, 2021
PubMed
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This summary is machine-generated.

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Determining the optimal decompressive craniectomy opening size is crucial. This study developed a method for patient-specific optimization and found unilateral openings of 130-180 cm² generally beneficial for reducing brain pressure.

Area of Science:

  • Neurosurgery
  • Biomechanical Engineering
  • Computational Medicine

Background:

  • Decompressive craniectomy is a critical procedure for managing increased intracranial pressure.
  • Optimal surgical parameters, including skull opening size and location, remain challenging to define.

Purpose of the Study:

  • To develop a patient-specific design optimization method for decompressive craniectomy.
  • To conduct a large-scale parametric study to guide optimal skull opening in cases of brain edema.

Main Methods:

  • Utilized finite element simulations for virtual surgical experiments.
  • Employed Goal Programming and Physical Programming for multiobjective optimization.

Main Results:

  • Postoperative pressure shows a near-linear relationship with preoperative pressure and opening area.

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  • Optimal unilateral skull openings range from 130-180 cm², outperforming bifrontal openings.
  • Brain tissue damage exhibits a complex, nonlinear response to surgical parameters.

    • Conclusions:

    • Optimal decompressive craniectomy openings are patient-specific, influenced by various input parameters.
    • The developed methodology allows for surgical optimization tailored to individual patient data and injury types.
    • Parametric study provides generalizable guidelines for approximate optimal skull opening dimensions.